Picking-motion for looms



R. C. DREHER. PICKING MOTION FOR LOOMS,

APPLICATlONYFILED OCT. 8, 1917.

Patented June 8, 1920;

2 SHEETS-SHEET 1- *Elllllllllllllflllllllllllllllllllllfll TTORNE Y.

R. C. DREHER. PICKING MOTION FOR WW8. APPLICATION HAM 06. a, 191].

lied June 8, 19213,

2 HEHS5HEET 2.

IN V EN TOR.

RICHARD C. DREHEB, OF ROCKVILLE, CONNECTICUT.

PICKINGr-IVIOTION FOR LOOlVIS.

remote.

Specification of Letters .Patent.

Patented June 8, 1920..

Application filed October 8, 1917. Serial No. 195,244.

To all whom it may concern:

Be 1t known that I, Riel-mun C. Dnnrmn, a citizen of the United States,residlng at Bockville, in the county of Tolland and State ofConnecticut, have inventeda new and Improved Picking-Motion for Looms,of which the following is a specification.

My invention relates more especially to the means for driving theshuttle from one side of the web to the other thereof, and an object ofmy invention, among others, is to increase the elliciency of the loom byproviding a minimum number of parts for throwing or driving the shuttleand that shall be extremely effective in operation.

One form of loom embodying my invention and in the construction and useof which the objects herein set out, as well as others, may be attained,is illustrated in the accompanying drawings in which- Figure 1 is a planview of a portion of a loom embodying my invention.

Fig. 2 is a view in section through my improved. loom looking from oneside.

Fig. 3 is detail view illustrating the construction of the pickerstaffs.

Fig. at is a detail view showing one form of means for throwing thepicker staffs.

In my improved loom, illustrated and described herein, the picker stafiis so mounted as to be driven directly from a shaft employed foroperating other parts of the loom, thus omitting a number of parts, asshafts, gears, straps &c., that are found in many of the looms in use atthe present time. As shown herein I make use of the lathe shaft fordriving the picker staffs, said staffs 5 being pivotally mounted at 6 oncollars 7 surrounding and supported on a lathe shaft 8 and preferablyresting against lathe shaft hearings on the side parts 9 of the frame.The picker staffs are each formed in two sections 10-11, one movablytelescoping within the other to permit relative changes in position ofparts caused by the pivotal movement of the lever and rectilinear movement of the picker, as shown herein the picker section 10 extending intothe other section of the staff. The picker section has a fork shaped endpivotally connected with a picker 12 that is of any usual form andconstruction and that may be mounted in any suitable manner in or upon across bar 13 of the lathe frame. This frame is constructed in a mannercommon, to looms of this class and the ways for the travel of a shuttle14:

may be of any suitable construction, the lathe being reciprocated as bymeans of lathe rods 15 connected with cranks 16 on the lathe shaft 8.

The sections 11 of the staffs have slots or openings 17 within which thecollars 7 are located. The openings 17 are preferably formed as by meansof straps 18, a pair of which is secured to each of the body parts 19,as by rivets or otherwise, as shown in Fig. 3 of the drawings, thestraps being also secured together at their ends opposite the bodyparts. Anti-friction roller supports 21) are located in the openings 17and are each adjustably secured in place in any suitable manner as bymeans of screws 23 extending through a slot 24 in one of the straps 18,said screws being headed to tightt, bind the supports. Rollers 21 aremounted on the supports in position to be engaged by cams on pickerstall? operating cam wheels 22 secured to the shaft 8. By thus providingmeans for adjusting the position of the rollers 21 with respect to thecams 25 the force of movement or throw of the pickers 12 may beaccurately adjusted to suit different conditions, and this adjustmentalso provides means for varying the amount of power that will betransmitted to the pickersby the action of the cams 25 and this is ofimportance as it often becomes necessary to increase or decrease thepower applied to drive the shuttles, owing to changed conditions fromvarious causes in the ope ation of the loom.

I also contemplate a variation in the amount of throw of the pickers andthe amount of power applied thereto by variations in the cams on the camwheels 22 and to this end I make the cams E25 sepa etc from the camwheels and adjustably mounted thereon. Any suitable means for adjustably mounting the cams may be employed, in the form shown herein alever 26 being secured to each wheel and having its end beveled to formthe cam 25. These levers are pivotally mounted in the cam wheel and areprovided with adjusting screws 27 for determining their positions andfor locating them in such positions, lock nuts 28 being employed on thescrews for holding them against unintentional turning movement. lVhe'nthe picker sticks are operated simultaneously as with the cams arrangedas shown herein, the stick opposite the shuttle, if overtaken by thereturn movement by the shuttle, will act as a buffer to retard themovement of the shuttle and lead it gently up to the end of its path.

In the form of the device shown in Fig. 4 the picker section 29 of thepicker staff is secured to the body section 30 thereof as by means of asocket 3]. formed on the body and a screw 32 passing through the socketand picker section. The end of the picker staff enters a recess in thepicker 12 within which it. is loosely engaged to prevent cramping actionby reason of the pivotal movement of the picker staff and therectilinear movement of the picker. A roller 33 is rotatably mounted onthe picker staff to engage an actuating cam 84 on the lathe shaft 8. Theoperation of this part of the device will be readily understood from theshowing in Fig. 4 of the drawings.

In accordance with the provisions of the patent statutes, I havedescribed the principles of operation of my invention, together with theapparatus which I now consider to represent the best embodiment thereof;but I desire to have it understood that the apparatus shown is onlyillustrative, and that the inventionmay be carried out by other means.

I claim: V

1. In combination with the lathe of a loom, a rotatably mounted lathe.shaft, direct connections between said lathe shaft andlathe, apickerstaff having an opening through which saidlathe shaft extends,said staff being pivotally mounted on said shaft and the latterrotatable within the staff, an; operative connection between said staffand a picker on the lathe frame, and means upon said shaft for drivingsaid staff.

2. In combination with the lathe of a loom, a rotatably mounted latheshaft, a direct and operative connection between said shaft and lathe, acollar loosely mounted upon said shaft, a picker staff pivotally mountedon said collar and projecting to engage a picker on the lathe frame, andmeans for operating said staff.

3'. In combination with the lathe of a loom, a rotatably mounted latheshaft, a direct and operative connection between said shaft and lathe, acollar loosely mounted upon said shaft, a picker staff pivotally mountedon said collar and projecting to engage a picker on the lathe frame, andmeans upon said shaft for operating said staff.

4.. In combination with the lathe of a loom, a picker slidably mountedon the lathe, a lathe shaft, an. operative connection between said latheshaft and picker, a collar mounted on said shaft, a picker staffincluding a body part with straps removably connected extendingtherefrom on opposite sides of saideollar to'afford a mount for saidstaff, and means upon said shaft for driving said staff. 7

5. In combination with the lathe of a loom, a picker mounted on saidlathe, a picker staff comprising one member and two straps removablysecured together and to said member and formed-with an'opening betweenthem, an operating shaft rotatably mounted on the loom frame andextending through the opening. between said straps, means for pivotallymounting said straps, means for operating said staff,'and a con nectionbetween said shaft and a loom member for operating the latter; r

6. In combination with the lathe of a loom, a picker mounted on saidlathe, a lathe shaft-operatively connected withsaid lathe, a pickerstaff pivotally mounted on said shaft and operatively connected withsaid picker, a disk secured to said shaft, a lever mounted in said diskand having a cam shaped end to engage said picker staff, and adjustingscrews engaging opposite sides of an end of said lever to determine itsposition and hold it in place.

7. In combination with the lathe of a loom, a picker mounted on saidlathe, a piv- M g RICHARD, c. DRE- ER.

